Strength prediction in CFRP woven laminate bolted single-lap joints under quasi-static loading using XFEM

Ahmad, Mohd Hilton and Crocombe, Andrew D. and Smith, Paul A. (2014) Strength prediction in CFRP woven laminate bolted single-lap joints under quasi-static loading using XFEM. Composites Part A: Applied Science and Manufacturing, 66 . pp. 82-93. ISSN 1359-835X

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Official URL: http://dx.doi.org/10.1016/j.compositesa.2014.07.01...

Abstract

This paper is concerned with modelling damage and fracture in woven fabric CFRP single-lap bolted joints that fail by net-tension. The approach is based on the assumption that damage (matrix cracking, delamination and fibre tow fracture) initiates and propagates from the hole in a self-similar fashion. A traction–separation law (based on physically meaningful material parameters) is implemented within an Extended Finite Element Method (XFEM) framework and used to predict the joint strength. Reasonable agreement between model and experiment was obtained for test configurations covering different weave types and lay-ups, a range of joint geometries (two hole diameters and a range of normalised joint widths) and finger-tight and fully torqued clamp-up conditions. The greatest discrepancies were for situations where the tensile fracture mechanisms were more complex, and hence not captured fully in the model or when bearing failure occurred.

Item Type:Article
Uncontrolled Keywords:textiles; fracture; finite element analysis (FEA); joints
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions:Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
ID Code:5835
Deposited By:Normajihan Abd. Rahman
Deposited On:02 Nov 2014 16:11
Last Modified:02 Nov 2014 16:11

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